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We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's
1880what do you mean by the "bay" in a switchyard? how to determine exact number of bays in a substation?
8 69665my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.
3 4558I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer
1879Among the following Which is vector quantity? a. Flux b. permitivity c. flux density d. magnetic intensity
2 4655I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF
3993Post New Electrical Engineering Questions
Formulae for calculating the transmission line losses for different voltage levels
What is mean by hot and cold loop testing?
What is mean by STUB protection?
what are the breakdown voltage rating of mini- curcuit'transfarmer!
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
what is conductor constant of raccun conductor
some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?
I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz
why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.
raleigh method
Why do not we prefer non conventional sources of energy to conventional sources?
why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!
what is the total power generation in india?
what are factors to be consider in electrical installation like load factor,diversity factor .....
How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer
